Automatic door.



T. KLOS.

AUTOMAUC DOOR. APPLxcATloN FILEDMAY 2u. 1915.

1,163,750. A l Patented Dec. 14, 1915.

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v To all ywhom it may concern.'

A its i jumran srarns rara-Fur onirica.

, TH'nonoRn KLs, oF'wAUsAU, wIs'coNsINf Be it known that I, THEoDoRE KLos, a citi-4 zen of the UnitedStates, residing atWausau, in the county of Marathon, State `of Wisconsin, have inventedcertain new and useful 'Improvements in Automatic Doors; and I do hereby declare the following Ato be a full, clear, and exact description of the.

inyention, such as will enable others skilled in the art to which it appertains to make andvuse the same. Y

invention-relates to doors, particulaily to those of the sliding type, and has for object theI provision of a door which will be gp'tomatically opened by the weight of a "vehicle approaching it.

, closed by a pair of doors 12 An' vimportantobject is the provision of an automatically opening door comprising two similar sections slidable ,toward and from veach other, the movement of each being uniform and simultaneouswith the movement of the other.

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A further Objectis the provision of a doorv automatically vclose when the vehicle has passed through.

this character which will An additional object is the provision of a door of this character which will be simple and. inexpensive to manufacture, elicie'nt and durable in service, not likely to get out of order,'.devoid of springs andlevers, and a general improvement of the'art.

With these and other objects and advan` tages in view, the invention consists in the novel construction and arrangement 'of parts to be hereinafter more fully describedand claimed, and illustrated in theaccompanying drawing, in whichlFigure l is a `front elevation of the door and its operating'mechanism showing it in its closed position, Fig. 2 is 'a side elevation, Fig. 8 is a. cross sectional view on the line 3 3 of Fig. 1 showing the door and its associated parts in top plan, Fig. 4 is a horizontal sectional view on the line 4-'4 of Fig. 1, Fig. 5 is a vertical sectional view, Iand Fig. 6` is a front velevation'showing the door open. Referring more particularly to the drawing the numeral 10 designates a wall which may be the front wall of a building and provided with an. opening "11 adapted top be provided 'with hangers 13 carrying rollers 14 disposed upon AUTOMATIC Booze.

Specification of Letters Patent. Patented De@a 14, 31915. Application led May 26, 19.15. Seriallfo. 30,585,

a.. track 15 ,supportedas at 16 upon the wall 10. The lower ends of the doors 12 are prevented from or cleats 17.

My invention consists in the provision of means automatically operated by ,a vvehicle approaching the .doo'rs' to" open the doors.

o thls end I prbvide a platform .18 of a width substantially thatv of the opening 11. The platform 18is lupon the-f1oor 20 and has lts other end adaptedA to lie adjacent the doors when the platform is lying fiat.

In order that the depression of the platform 18caused by tle driving of a vehicle thereonto may be utilized for opening the doors I providebrackets 21 secured upon the wall 10 and having journaled thereon palrsof pulleys 22 and 23. pon each side of the platform 18'adjaoent its free end is secured a flexible member 24 which may con-t veniently be a cable. tend upwardly and are trained about the inner pulleys 22 lafterl which their free ends are connected with the farther edge of each adjacent door 12 as shown at 25.

It will be seen that when a vehicle is The members-24 eX- Y swinging .movement lby strips hinged as shown at 19 driven onto tohe platform 18, the flexible members 24- will be pulled downwardly, thereby separating the doors and allowing `the' vehicle to' pass through.

i In order Vto provide means whereby the doors will automatically close when the vehicle has passedthrough I a considerable distance supportv the upper ends of a pair of vertical provide a bracket 26 at eachside of the door opening and at therefrom, secured upon .the wall 10. These brackets 26 each rods27 extending upwardly from the cleats the adjacent outer pulley 23 and'which has with- 4the nea-rer edge When the doors' are its free end connected of the farther door 12. opened as 28 will be lifted and when a vehicle has previously described, the weights passed through the door-way and passed ena rek tirely off from the platform 18, the weights will slide down upon the rods 27 and will consequently draw the doors together.,`

Having thus describedl my invention, I claim:

The combination with a door-way and a pair of 'sliding doors therefor, of a platform having' one endadjaeent said doors and yits "other end hinged, a bracket seeuredat euch side of said door-way, a pair of pulleys journaled ou. each bracket, flexible members connected with the sides of said. platform adjacent its free end, trained about corresponding ones of said pairs "of pulleys and connected with the farther edge of each 15 nearer door, vertically disposed guides afl-- jacent the. sides of the door-way, a weight shdable upon each giude, and a flexible member connected with each weight, trained about: the other of each pair of pulleys and 20 connected with the nearer edge ofthe farther door. y

In testimony whereof, I affix my signature, in the presence of two witnesses.

THEODORE KLOS Witnesses: l

R. N. LARN-ER, W. GORMAN. 

